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7 CFR § 810.804 - Grades and grade requirements for mixed grain. 

---
identifier: "/us/cfr/t7/s810.804"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "7 CFR § 810.804 - Grades and grade requirements for mixed grain."
title_number: 7
title_name: "Agriculture"
section_number: "810.804"
section_name: "Grades and grade requirements for mixed grain."
chapter_name: "AGRICULTURAL MARKETING SERVICE (FEDERAL GRAIN INSPECTION SERVICE, FAIR TRADE PRACTICES PROGRAM), DEPARTMENT OF AGRICULTURE"
subchapter_number: "A"
subchapter_name: "FEDERAL GRAIN INSPECTION"
part_number: "810"
part_name: "OFFICIAL UNITED STATES STANDARDS FOR GRAIN"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "7 U.S.C. 71-87k."
regulatory_source: "52 FR 24418, June 30, 1987, unless otherwise noted."
cfr_part: "810"
---

# 810.804 Grades and grade requirements for mixed grain.

(a) *U.S. Mixed Grain (grade).* Mixed grain with not more than 15.0 percent of damaged kernels, and not more than 3.0 percent of heat-damaged kernels, and that otherwise does not meet the requirements for the grade U.S. Sample grade Mixed Grain.

(b) *U.S. Sample grade Mixed Grain.* Mixed grain that:

(1) Does not meet the requirements for the grade U.S. Mixed Grain; or

(2) Contains more than 16.0 percent moisture; or

(3) Contains 8 or more stones that have an aggregate weight in excess of 0.2 percent of the sample weight, 2 or more pieces of glass, 3 or more Crotalaria seeds (*Crotalaria* spp.), 2 or more castor beans (*Ricinus communis* L.), 8 more cockleburs (*Xanthium* spp.) or similar seeds singly or in combination, 4 or more pieces of an unknown foreign substance(s) or a recognized harmful or toxic substance(s), 10 or more rodent pellets, bird droppings, or an equivalent quantity of other animal filth per 1,000 grams of mixed grain; or

(4) Is musty, sour, or heating; or

(5) Has any commercially objectionable foreign odor except smut or garlic; or

(6) Is otherwise of distinctly low quality.